National Museum of American History
William P. Erwin and Thomas A. Dugdale's Second 1870 School Desk and Seat Patent Model
Erwin, William P. · 1870
William Erwin and Thomas Dugdale from Richmond, Indiana, received a U.S. patent for an improved school desk. Patent no. 100275 was issued by Dugdale and Erwin on March 1, 1870.
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